condition mean min max ZT0-3 96.94999999999999 96.94999999999999 96.94999999999999 ZT4-7 136.0 136.0 136.0 ZT8-11 130.2 130.2 130.2 ZT12-15 71.55 71.55 71.55 ZT16-19 79.4 79.4 79.4 ZT20-23 67.55 67.55 67.55